A facile synthesis of graphene/Co3V2O8 nanocomposites and their enhanced charge storage performance in electrochemical capacitors

Wei Hau Low, Chiu Wee Siong, Chin Hua Chia, Siew Shee Lim, Poi Sim Khiew

Research output: Contribution to journalArticle

Abstract

The electrochemical capability for the charge and energy storage of supercapacitors can be augmented by fabricating the hybrid and binder-free electrodes. In this work, the novel graphene/Co3V2O8 micro-pencils nanohybrids were successfully developed via the one-pot solvothermal method. The interactive effect between graphene and Co3V2O8 was investigated by varying their mass ratios. Benefiting from the peculiar morphology of Co3V2O8 micro-pencils and the homogenous distribution of Co3V2O8 on the graphene sheets, G-4CVO manifested a relatively promising specific capacitance of 528.17 F·g−1 at 0.5 A·g−1 while 80% of the charge storage capability was still retained even after 5000 continuous cycles. G-4CVO also delivered a remarkable energy density of 73 Wh/kg and these advanced electrochemical performances could be explicated by the integration of graphene sheets which shortens the ions and electrons transportation pathway and at the same time acts as a scaffold to alleviate the volume variation during the inter/de-intercalation process.

Original languageEnglish
Pages (from-to)515-523
Number of pages9
JournalJournal of Science: Advanced Materials and Devices
Volume4
Issue number4
DOIs
Publication statusPublished - Dec 2019

Fingerprint

Graphite
Graphene
Nanocomposites
Capacitors
Intercalation
Scaffolds
Energy storage
Binders
Capacitance
Ions
Electrodes
Electrons

Keywords

  • Graphene
  • Graphene/CoVO
  • One-pot solvothermal
  • Supercapacitor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Biomaterials
  • Materials Science (miscellaneous)

Cite this

A facile synthesis of graphene/Co3V2O8 nanocomposites and their enhanced charge storage performance in electrochemical capacitors. / Low, Wei Hau; Siong, Chiu Wee; Chia, Chin Hua; Lim, Siew Shee; Khiew, Poi Sim.

In: Journal of Science: Advanced Materials and Devices, Vol. 4, No. 4, 12.2019, p. 515-523.

Research output: Contribution to journalArticle

@article{68217939e36449b49551e8f517c3e7a4,
title = "A facile synthesis of graphene/Co3V2O8 nanocomposites and their enhanced charge storage performance in electrochemical capacitors",
abstract = "The electrochemical capability for the charge and energy storage of supercapacitors can be augmented by fabricating the hybrid and binder-free electrodes. In this work, the novel graphene/Co3V2O8 micro-pencils nanohybrids were successfully developed via the one-pot solvothermal method. The interactive effect between graphene and Co3V2O8 was investigated by varying their mass ratios. Benefiting from the peculiar morphology of Co3V2O8 micro-pencils and the homogenous distribution of Co3V2O8 on the graphene sheets, G-4CVO manifested a relatively promising specific capacitance of 528.17 F·g−1 at 0.5 A·g−1 while 80{\%} of the charge storage capability was still retained even after 5000 continuous cycles. G-4CVO also delivered a remarkable energy density of 73 Wh/kg and these advanced electrochemical performances could be explicated by the integration of graphene sheets which shortens the ions and electrons transportation pathway and at the same time acts as a scaffold to alleviate the volume variation during the inter/de-intercalation process.",
keywords = "Graphene, Graphene/CoVO, One-pot solvothermal, Supercapacitor",
author = "Low, {Wei Hau} and Siong, {Chiu Wee} and Chia, {Chin Hua} and Lim, {Siew Shee} and Khiew, {Poi Sim}",
year = "2019",
month = "12",
doi = "10.1016/j.jsamd.2019.10.001",
language = "English",
volume = "4",
pages = "515--523",
journal = "Journal of Science: Advanced Materials and Devices",
issn = "2468-2284",
publisher = "Elsevier BV",
number = "4",

}

TY - JOUR

T1 - A facile synthesis of graphene/Co3V2O8 nanocomposites and their enhanced charge storage performance in electrochemical capacitors

AU - Low, Wei Hau

AU - Siong, Chiu Wee

AU - Chia, Chin Hua

AU - Lim, Siew Shee

AU - Khiew, Poi Sim

PY - 2019/12

Y1 - 2019/12

N2 - The electrochemical capability for the charge and energy storage of supercapacitors can be augmented by fabricating the hybrid and binder-free electrodes. In this work, the novel graphene/Co3V2O8 micro-pencils nanohybrids were successfully developed via the one-pot solvothermal method. The interactive effect between graphene and Co3V2O8 was investigated by varying their mass ratios. Benefiting from the peculiar morphology of Co3V2O8 micro-pencils and the homogenous distribution of Co3V2O8 on the graphene sheets, G-4CVO manifested a relatively promising specific capacitance of 528.17 F·g−1 at 0.5 A·g−1 while 80% of the charge storage capability was still retained even after 5000 continuous cycles. G-4CVO also delivered a remarkable energy density of 73 Wh/kg and these advanced electrochemical performances could be explicated by the integration of graphene sheets which shortens the ions and electrons transportation pathway and at the same time acts as a scaffold to alleviate the volume variation during the inter/de-intercalation process.

AB - The electrochemical capability for the charge and energy storage of supercapacitors can be augmented by fabricating the hybrid and binder-free electrodes. In this work, the novel graphene/Co3V2O8 micro-pencils nanohybrids were successfully developed via the one-pot solvothermal method. The interactive effect between graphene and Co3V2O8 was investigated by varying their mass ratios. Benefiting from the peculiar morphology of Co3V2O8 micro-pencils and the homogenous distribution of Co3V2O8 on the graphene sheets, G-4CVO manifested a relatively promising specific capacitance of 528.17 F·g−1 at 0.5 A·g−1 while 80% of the charge storage capability was still retained even after 5000 continuous cycles. G-4CVO also delivered a remarkable energy density of 73 Wh/kg and these advanced electrochemical performances could be explicated by the integration of graphene sheets which shortens the ions and electrons transportation pathway and at the same time acts as a scaffold to alleviate the volume variation during the inter/de-intercalation process.

KW - Graphene

KW - Graphene/CoVO

KW - One-pot solvothermal

KW - Supercapacitor

UR - http://www.scopus.com/inward/record.url?scp=85076239395&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85076239395&partnerID=8YFLogxK

U2 - 10.1016/j.jsamd.2019.10.001

DO - 10.1016/j.jsamd.2019.10.001

M3 - Article

AN - SCOPUS:85076239395

VL - 4

SP - 515

EP - 523

JO - Journal of Science: Advanced Materials and Devices

JF - Journal of Science: Advanced Materials and Devices

SN - 2468-2284

IS - 4

ER -